Calculus sucked more for me because here in Brazil the education system doesn't include it in the high-school curriculum, so unless you're on some top private school, you only first hear about "calculus" in college. In the USA and other places there's exposure to it prior to college, which I believe is sensible.

As a side note, I can't stress enough how bad the education system is in Brazil (in the sense of lack of structure, motivation, etc.), even at college level. Almost everything I know is self-taught (including English). I sometimes hear complaints about public school in the USA, and there's a meme that americans are "dumb", but it seems miles ahead to what I had access to.